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Deferred Income and Revenue Participation Rights (Tables) | 12 Months Ended
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Dec. 31, 2017
Revenue Recognition and Deferred Revenue [Abstract] |
Participating Revenue Rights | The Company’s participating revenue rights and deferred revenue consisted of the following for the respective year end:
|  | December 31, 2017 |  |  | December 31, 2016 |
“Cambridge” project |  | $ | 825,000 |  |  | $ | 825,000 |
“Seattle” project |  |  | 62,500 |  |  |  | 62,500 |
Galt Resources, LLC (HMS Victory) |  |  | 3,756,250 |  |  |  | 3,756,250 |
Total revenue participation rights |  | $ | 4,643,750 |  |  | $ | 4,643,750 |

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